Foot-pump



vFOOTVPUMP. APPLiaATjoN FILED JULY 30, 1911.

.Patented June 21, 1921` 2 SHEETS-SHEET drwhuw. k. m,

L. H. WHEELER, DECD. I c. E. WHEELER, ADMINISTRATOR.

` FOOT PUMP. APPLICATION FILED IuIY 30I9I7.

1 ,$821,603.v Patented June 21,1921...

2 SHEETS-SHEET 2. y

I, WWII HMIIWIIIIII y l y l D S www1/tofu y vrigid"centrally-disposedtoggle',lever mechanism 'comprising a single centrally-disposed 'treadlelever pivotally vconnected to said pis- UNITED STATESv PATENT OFFICE.

LEON H. WHEELER, OE ELLENSBURG, WASHINGTON; c. EWHEELER, ADMINISTRA- TOR OF SAID LEON H. WHEELER, DECEASED, ASSIGNOR, BY DIRECT AND MFSNE ASSIGNMENTS, 0E ONE-THIRD 'ro RAY MQOOY, 0E NEWYOEH, N. Y., AND ONE- THIED To JOSEPH E. OBRIEN, or WEST NEW YORK, NEW JERSEY.

LApplication filed July 30,

In foot pumps it is desirable to have a toggle-lever device which is'as light, small and compact as is possible-consistently with rigidity, durability, eflioien'cy and ease of operation vand it is also desirable to have-the toggle-'levers through'which the application of power is applied to the pistonv to approach as close to the ground as possibleg-and with these ends in viewy I have eliminated the du-v plicate or twin lever parts heretofore usually employed, consolidating suoli twin"parts into one and producing a foot pump of relatively few strong, rigid and durable parts, in which*I the vertical power-producing movement ofthe foot is centrally and .withv out cramping communicated 'to the piston by a vertically-movable treadle lever and a VlinkY Vleverwhich Vforms a toggle jointv therewith,

and `'these levers with the piston to which they are attached will' have a maximum Of air-pumping movementwith a given raising 'of the foot-treadle and will cause a maximum elfective stroke ofthe piston with' a given sizeof levers.

In the preferred embodiment Shown I accomplish these results by providing a pump Vbarrel which has a centrally-located longitudinal slot and means Vsuch as suitablefeet at opposite ends of the'barrel for supporting the same in a' horizontal position, a trunk piston closely fitting withinl said barrel;

ton within 'the barrel" by v"I'n'ea'ns lof `integral b'earingflanges andaniaxle orv pivot 'member inclosed within said barrel, said treadle i Aleverbeingpreferably movable within the barrel and through said Acentrally-disposed slot, a' centrally-'disposedl `link lever also moving vertically within the barrel. and through said Slot and formingatoggle joint withsaid treadle lever, said link being pivpump embodying my Specification of Letters Patent. Patented J11I1e721,' 1921.

1917. Serial No. 183,414.

horizontal alinement with the pivotalconnec- Vtions at the ends offsuchlevers and the tog- '.gle' joint, without locking, is caused inv its downward movement to :come well down withinthe barrel so-that the effective movement of the leversis materially increased and.` the piston stroke is proportionately lengthened.` Y

f In the -accompanying drawings,in which similar reference characters designate corresponding parts throughout the Several views i Figurel isa longitudinal sectionof a invention, vwith the lever parts in raised position; f f

, Fig. 2 is a side elevation of the device with the levers lowered and locked in position; j

Fig. 8 is a plan view of said device; Fig. 4: is a longitudinal section on the line L-'4l of,Fig. 2; and 1 Fig. 5 is a rear end in locked position.-

Referring now to these drawings, `l Vindielevation of the ,device cates' a cylindrical barrel of a footy pump 4which isisuitably supported in ahorizontal position by vfeet 2, 2a at its opposite ends,

which feet may be as shown formed integral with cylinder heads 3, 3al respectively. The cylinder-head 3 is ,provided with the usual outlet.v valve 4 controlled bylball '4a' to `elbowillgand hose 5to the automobile tire or thelike, the said hose` 5 vbeing provided ,withV a lcoupling orconnection 5a Vfor that permit thepassag'e'of air' in an `outward di- Y rection only from the barrel l through the handling. and

llange portion 6e of which fits closely against the inner surface of the barrel but which is spacedC from the marginal edge of the washer 6c sor that upon movement of the piston in av forward direction air will be ejected,

but when the valve 4 is closed and the piston is moved rearwardly air will be admitted 1n front of the piston head between the marginal flange and barrel.

10 Thus'far, the device is old and wellknown A and it' is in combination with these old and well-known elements of noveljmeans for reciprocatingthe piston and procuring the results above indicated that myinvention resides, lwhich novel means I shall now -de-y scribe.

' The/barrel Y1 is-as shown provided in its upperf sur-face with ya slot 8 which extends :longitudinally ofl the barrel andv vertically 2'0 .through thev rear head 3*.V As illustrated, Said slot is widened-at its middle portion and reduced at `its Vopposite ends. f .ln theconstruction illustrated,the' dispo- Sition o f this slot 8 at the top of thefbarrel permitsthe entrance of .a single centrally-V disposed Atreadle-lever 7 within the barrel :andi allows. its central or axial connection `withthe piston` 6. As shown, the piston -is provided with vrearwardly-extending bear- 3o .ing langesf. in which is mountedV a pivot pin9 and` the end of the. treadle leverA is plvoted at the middle of said pin 9A and extends upwardly and through'the slot and is.;prov1ded at its outer end with a footi piece 7*.l l"Another single centrally disposed link ylever 10 is pivoted at itsrear end to .a fixed part of the. pump and, as shown, is :so pivoted ona pin 10a. Said lever-pin, as shown, is mounted in thefoot-piece 2a which 4011s illustrated comprises an integral extension of the rear end of the cylinderhead 3*". The link leverlO is as shown bifurcated and connected to the treadle by the pivot pin 10b, the central portion of the slot 8, being;

'M widened to permit. the entranceV within the lnot liii-use. Y, 4 A 1 vinor described my .inventioml claim H 1. ,A- oo t pumpV` embodying in combination .a pump-barrel having air-'egress means;

VH6.0 means for supporting said barrel in a horizontalposition; a piston reciprocable within said barrel; ytoggle-lever mechanism adapted to extend within thebarrel for moving the Y piston in one direction, said `pumpbeing provided with means for permitting Athe said toggle jointY to be `lnovedto a positionbelow the top of the barrel whereby additional Veffective movement lof said levers will be provided and spring means for moving the piston in thev opposite direction.` A, .Y

2. A foot pump embodying in combination-a pump-barrel khaving a single centrally-disposed longitudinal slot and provided with air-egress means; means for supporting'said barrel in a horizontal' position with'said-'slot at its top portion; a piston fitting within said barrel; two operating levers arranged tov form a toggle joint for movingthe piston in one "direction, one of said levers having'aconnectlonwlthm the barrel with said pistonvand the other lever pivotally connected atv a -ixed point, both levers and said joint being movable vertically through the said slot andthe rearend of the barrel to a position belowl the .top -of said barrel 4whereby .an Vadditional..eii'ective movement of said levers and joint .toward the axis of said barrel is-.provided;v a footpiece associated with oneof saidlevers and spring means for-movingthe piston Y.in the opposite direction.

f f3'. Afoot pumpembodying/in combination apump-barrel having la.single vvcentrally-disposed'. longitudinal, slot and. providedl with airfeg'ressmeans, means forsu-pporting said. barrel in a horizontal position withzsaid slot at `its -top portion;y ak piston Vreciprocable within said barrel; two operating levers arrangedtoform a toggley joint for. movlng the piston 1n one dlrectlon, one of sald leversy having an. axlal pivotal connection with saidapistonwithin said barrel y and the other lever. pivoted'k at a ixed point Y below vthe pivotal y.connection .of the firstmentioned 5 lever, `both levers andv said :joint being movable vertically through f said slot and the rear end of the barrelto a position contiguous tothe axiso-f said barrel where- Hbyan additional effective movement of said levers and joint toward the axis of the barrel is provided and locking of Asaidlevers in such movement is prevented, a foot piece associated with one ofsaid .levers and spring means for moving the-piston in the opposite direction. Y .f v j i v 4. A foot pump embodyingin combinahavin'g air egress means, al piston recipro-` (cable within saidbarrel, a lpivotjmember .connectedv with' s aid piston and entirely in-k j closed `within saidcylindrical g pump barrel, l4 j ,centrallydisposed toggle-lever mechanism pivotally connected at oneend tosaid pivot` member and at the opposite end to awfixedi partof the pump and spring-'means 'to impart return movementgtd the` toggle lever mechanism and piston. y y5. Ak foot pump embodying in combina- `tiona, cylindrical Ypump barrel arranged' to ,tion a cylindrical'pumpbarrel varranged to be supported-.ina horizontal positionv and be supported in a horizontal position and having air egress means, a piston reciprocable Within said barrel, a pivot member carried by said piston and entirely inclosed Within said cylindrical pump barrel; centrally-disposed toggle-lever mechanism comprising tivo levers pivotally connected toy gether, one 'of Which has a pivotal connection With said piston pivot member at the axis of said piston and the other of which has a centrally-located pivotal connection with a Xed part of the pump and spring means to impart return movement to the toggle-lever mechanism and piston.

6. A foot pump embodying in combination a cylindrical pump barrel arranged to be supported in a horizontal position and having air egress means, a piston reciprocable Within said barrel, a pivot member connected with said piston and entirely inclosed Within said cylindrical pump barrel, another pivot member arranged at the rear of the pump in relatively Xed position and a single pair of toggle levers pivoted at opposite ends to the said pivot members and also pivoted to each other intermediate the LEON H. WHEELER.

Witnesses RAY MoCoY, EDGAR B. HAYMOND. 

